## Question

###### .Suppose that the health of a person could be at risk if theconcentration of vitamin D in the blood stream is less than 70.0nM/L (say 69.999 nM/L). Use Excel to code the datain column Sample 1 and put the result in column Sample_p. Codeconcentrations of 69.999 nM/L or lower as â€œ1â€ and codeconcentrations of 70 and above as â€œ0â€. Calculatemanually a 99% confidence interval for the populationproportion for concentration of vitamin D less than 70.0 nM/L andconfirm your calculations using Exce

.Suppose that the health of a person could be at risk if the concentration of vitamin D in the blood stream is less than 70.0 nM/L (say 69.999 nM/L). Use Excel to code the data in column Sample 1 and put the result in column Sample_p. Code concentrations of 69.999 nM/L or lower as â€œ1â€ and code concentrations of 70 and above as â€œ0â€. Calculate manually a 99% confidence interval for the population proportion for concentration of vitamin D less than 70.0 nM/L and confirm your calculations using Excel (use the normal approximation). Sample 1 Sample_p 87.076 69.03 74.436 84.161 88.414 94.052 97.15 65.791 96.522 71.736 67.113 75.427 82.938 93.804 87.749 84.458 85.309 60.938 83.53 112.029 76.55 80.752 105.515 73.447 87.211

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